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Ch 6: Genetics & Heredity

About This Chapter

If you need to review the basics of genetics and heredity, look no further than this comprehensive study resource. This collection of science lessons cover concepts such as genotypes, point mutations, DNA and the genome.

Genetics & Heredity - Chapter Summary

Refresh your memory of genetic and hereditary concepts with this engaging and convenient study resource. The expert instructors in this chapter will walk you through the study of genetics and heredity by examining the genome, pedigree analysis, human reproductive systems, genetic mutations and more. You'll study examples of genotypes and understand how DNA is affected by insertions and deletions. Upon completion of this chapter, you should be able to:

  • Explain the genome
  • Summarize the study of genetics
  • Recognize examples of genotypes
  • Identify inheritance patterns in a pedigree analysis
  • Understand how the male reproductive system produces sperm and the female reproductive system produces eggs
  • Know how point mutations, insertions and deletions affect DNA
  • Describe the effects of mutation on protein function
  • Assess the environment's effect on mutation rates
  • Define the effects of frameshift mutations

This comprehensive chapter helps you quickly and efficiently review essential genetics and heredity topics. Each lesson offers concise definitions and memorable examples to help you retain the information. To supplement your study, we've included printable lesson transcripts and interactive self-assessment quizzes. Available 24/7, this chapter simplifies the studying process and allows you to review these topics at anytime that fits your schedule, whether it's at home, at work or on-the-go.

10 Lessons in Chapter 6: Genetics & Heredity
Test your knowledge with a 30-question chapter practice test
Basic Genetics: The Genome & Chromosomes

1. Basic Genetics: The Genome & Chromosomes

There are approximately 3 billion bases in the human genome. In this lesson, you'll learn more about the genome and its organization into chromosomes. We think about DNA often as the blueprint for life, but we can also think of it as the recipe for life with the nucleus being the library.

Genetics: Heredity, Traits & Chromosomes

2. Genetics: Heredity, Traits & Chromosomes

We view manipulation of genes in our crops and livestock as a recent development. Yet, man has been manipulating the genetic makeup of his food for thousands of years through cultivation and breeding. This lesson will begin to help you understand how genetics works.

What are Genotypes? - Definition & Examples

3. What are Genotypes? - Definition & Examples

In this lesson, you will learn about what genotypes are, where they come from and how they play a major role in determining how your body works and what you look like.

Pedigree Analysis in Human Genetics: Inheritance Patterns

4. Pedigree Analysis in Human Genetics: Inheritance Patterns

So you've learned what a pedigree is and how to read or even create one. Now you're ready to learn how to analyze a pedigree and figure out what kind of inheritance pattern a genetic condition follows!

Spermatogenesis: How the Male Reproductive System Produces Sperm

5. Spermatogenesis: How the Male Reproductive System Produces Sperm

In this lesson, you'll learn the series of steps necessary to produce a fully functional sperm cell. You'll also look at the structure of a sperm cell and see how it's equipped to venture forth into new territory.

Oogenesis: How the Female Reproductive System Produces Eggs

6. Oogenesis: How the Female Reproductive System Produces Eggs

Did you know that a human female already has all of the oocytes that she will make in her entire life before she is even born? In this lesson, you'll learn how the human body produces an ovum through the process of oogenesis. You'll also learn how polar bodies help to ensure that female gametes are of high quality even though they are not produced in high quantities.

What is a Point Mutation? - Definition, Causes & Types

7. What is a Point Mutation? - Definition, Causes & Types

What are genetic mutations? How do they affect our DNA? This lesson covers the basics of point mutations and provides simple examples of different mutation types.

Effects of Mutations on Protein Function: Missense, Nonsense, and Silent Mutations

8. Effects of Mutations on Protein Function: Missense, Nonsense, and Silent Mutations

How does a tiny point mutation change the way a protein works? What are the consequences of base substitutions? In this lesson, we'll use an imaginary creature to explore missense, nonsense and silent mutations.

Mutagens: How the Environment Affects Mutation Rates

9. Mutagens: How the Environment Affects Mutation Rates

What causes mutations to occur in living things? How do we avoid mutations? Are mutations always bad? Discover answers to these questions and more in this lesson on mutagens.

Effects of Frameshift Mutations: Definitions and Examples

10. Effects of Frameshift Mutations: Definitions and Examples

What is a frameshift in genetic translation? How can a frameshift mutation change a protein? In this lesson, learn about the codon reading frame and how frameshift mutations cause serious problems for polypeptide formation.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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